Locomotive-tender underframe.



H. M. PFLAGER.

LOCOMOTIVE TENDER UNDERFRAME.

APPLIGATION FILED OGT. 28. 1911.

Patented Dec. 17, 1912.

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APPLICATION FILED OCT. 28, 1911,

Patented Deo. 17, 1912.

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HARRY IVI. PFLAGER, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE LOCOMOTIVETENDER FRAME COMPANY, 0F ST. LOUIS, MISSOURI, A CORPORATION OF DELAWARE.'y

LOCOMOTIVE-TENDER UNDERFRAIVIE.

Speciication of Letters Patent.

Patented Deuil?, 11912.

Application led October 28, 1911. Serial No. 657,266.

To all whom tt may concern.'

Be it known that I, HARRY M. PFLAGER, a citizen of the United States,residing at St. Louis, Missouri, have invented a certain new and usefulImprovement in Locomotive- Tender Underframeapof which the following isa full, clear, and exact description,`

underframe. Fig. 4 is a transverse sectiontaken on the line 1- 4 of Fig.l. Fig. 5 is a transverse section taken on line 5-5 of Fig. 1. F ig. 6is a rear elevation of the underframe.

This invention relates to new and useful improvements in locomotivetender underframes, the object being to lower the center of gravity ofthe tank carried by the frame.

In locomotive tenders now commonly inservice, the tank rests upon afloor which is in turn supported by an underframe which varies from 10to 15 inches in depth. As the oor level of various types of locomotivesnow in use is relatively high, and as itis necessary to locate the floorof the tender on the same plane, this leads to raising the center ofgravity of the tank to a comparatively great distance from the rail'which produces a strong tendency of the tank to overturn when roundingcurves.

B my improvement the center of gravity of tlie tank is lowered and theabove mentioned tendency to overturn is thus overcome. The ytank isbifurcated at its front portion to provide the usual receptacle forcoal, and if desired., the side and rear walls may be raised above thetank proper to increase the coal carrying capacity of the tank. The tankis further provided with a recess in the under side of its rear portionwhich enables the tank to straddle the underframe `the center sill ofthe tender frame.

and extend down on each side thereof, and

between the front and rear end sills whereby l am able to utilize fortank purposes a large portion of the s ace ordinarily occupied by thetender un erframe. The sides of the central portion of the tank aresupported by suitable cross bearers whichy cxtend laterally from thecentral portion of The top surfaces of these cross bearers occupy aplane a substantial distance below a plane occupied by the top of thecenter sill and the usual side bearings (not shown) are applied to thesides of the end portions of these cross bearers. By extending the sidemembers of the tank down between the end sills of the underframe, thetank is held firmly in position and is prevented from sliding off of theunderframe in the event of collision, and as the tank straddles thecenterpmember of the underframe, sidewise displacement .is alsoprevented.

ln the drawings 1 designates the front end sill of the tender frame and2 the rear end sill. The front end sill is preferably provided with theusual opening 1a for a pocket coupler by means of which the ten` der iscoupled to the locomotive. rllhe rear end sill 2 is preferably of theusual box type and provided at its center with a opening 28L whichaccommodates the draw bar by means of which the tender is coupled to anadjacent car. Extending transversely beneath this opening 2a is adetachable draw bar carry iron 3.

4 designates the center sill of the frame which is of the usual boX typeand having its top and bottom plates preferably perforated for thepurpose of lightening the weight of the entire underframe. rl`he ends ofthe center sill are formed integral with the end sills 1 and 2, andformed integral with the end sills and under portions of the center sillare diagonally disposed braces which materially strengthen the ends ofthe structure and provide supports for the end vportions of the tanklocated on the frame.

of the sides thereof are cross bearers 6 which are preferably hollow,and which serve as supports for the central portion of .the tank locatedupon the frame.

The tank, which is supported by my improved frame, is preferablyconstructed of heavy sheet metal and comprises a rear portion 7 whichoccupies a position on the rear portion of the underframe immediatelyadjacent the end sill 2, and formed in the under side of thisl portionof the tankv is a longitudinally extendingspace 8 which receives therear portion of thecenter sill 4. The under side of the portion 7 of thetank rests directly upon a pair of cross bearers 6. The forward portionof the tank is bifurcated and the parts 8formed by such constructionvrest upon the forward air of cross bearers 6 andthe extreme orward endsof said/parts bear against the rear side ofthe endsill 1. A floor 9connects the parts 8 of the tank and said floor lies directly upon theforward portions of the center sill 4. The space above this floorbetween the parts 8 forms arece'ptacle for coal, and if desired, a rearwall may be extended upward from the portion 7 and side walls v may beextended upward from the sides of the tank to form'additional coal spacethereby materially increasing the coall 'carrying capacity of thetender.

races 5.

My improvedtender frame is preferably cast in a single piece, as shownand described, although it is obvious that the frame maybe built up fromspecial castings or from ordinary commercial shapes.

A tender under frame of my improved construction is comparatively' lightin weight, is very strong and rigld, has great carrying capacity and thecenter of the tank mounted on the underframe is located at a.comparatively low point soas to overcome the tendency of the tender tooverturn when rounding curves. The tank when properly positioned on theunderframe straddles the center sill 1 and rests upon the cross bearers'and the diagonally disposed braces 5, with itsends bearing directlyagainst the inner -faces of the end sills 1 and`2 and thus said tank iseiectually prevented from sliding movement ,both lengthwise andlaterally during service or in case of wrecks.

It will be readily understood that minor changes, in the size, form andconstruction of the various parts of'm rimproved tender yunderframe may'Be ma e Iand substituted for those herein shown and described without dearting -from the spirit of m invention, t 1e scope of which 1s set fortin the appended claims.

\ I claim: 1. Ay Vlocomotive vtender comprising an p The extreme underportions of the'tank are-supported by the` underframe consisting of endsills and a centersill, and a tank straddling said center sill with itsends bearing against the end sills whereby said tank is held againstlongitudinal and transverse movement with respect to the underframe. 1

2. In avlocomotive tender, the combination of, an underframe comprisingend sills and a center sill, and a tank straddling the center sill, theends of which tank bear against the inner faces of the end sills.

3. In a locomotive tender, the combination of, an underframe comprisinga center sill and end sills, a tank arranged between said end sills andsupports for said tank, which supports are carried by said center sill.

4. A locomotive tender, com rising an underframe, consisting of end sils, a center sill, laterally projectin tank supports on said center sillsintermediate ofthe end sills, and-a tank straddling the center sill andbearing upon the lateral supports and against the end sills.

5. In a locomotive tender underframe a hollow box shaped center sill,end sills integrally connected .to` said center sill and diagonallydisposed tank supporting members arranged between the lower portions of.

the center sill and end sills.

6. In a locomotive tender underframe, a hollow box shaped center sill,end sills integrally connected to. said center sill and diagonallydisposed tank supporting members arranged between the lower portions ofthe center 4 faces of which supporting members occupy a planesubstantially belowthe plane occupied b )lfl the top surfaces ofthecenter and end s1 s.

7. Thecombination with a locomotive tender underframe having a centersill and end sills, of a tank straddling said center sill with the sideportions of said tank extended downward on the sides of said center silland the ends of which tank inner faces of the end sills.

8. The herein described locomotive tender underframe formed in al singlepiece and comprising a box shaped center sill, end sills,

diagonally disposed tank supporti-ng members arranged between the endportions of the center sill and the end sills, and tank supportingmembers vprojecting laterally from the sides of the center sill, allofwhich tank supporting members lare arranged below the plane occupiedby the top' surfaces of the center and end'sills.

9. The combination with a locomotive tender underframe, havin a centersill and end sills,.of a tank stra dling said center sill with the sideportions of said tank extending downward to the sides of the centersills, and su central portion of the tank.

bear against, the

sill and end sills andthe top surpports on the center sill for the 10.The combination with a locomotive ln testimony whereof l hereunto aiixmy tender underframe havin a center sill and signature in the presenceof two witnesses, end sills, of a tank straddlin said. center sill this20th day of ctober, 1911. with the side portions of s'ai tank extendingH. M. PFLAGER.

E downward to the sides of the center sills, Witnesses:

and supports on the center sill for the cenf ARTHUR T. MOREY, tral andend portions of the tank. HAL C. 'BELLvILLm

